JPS5937623A - Gas breaker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a gas breaker, and particularly to a gas breaker suitable for a multi-bus type gas insulated switchgear.

[Background technology and its problems]

Gas in progress! /i is SLF, which has become important in practical use in recent years.
Because it shows excellent performance even under severe conditions such as (short distance rI# line failure) and step-out conditions, it has become the mainstream of power circuit breakers and has come to be used in large numbers.

Especially in large cities, gas insulated circuit breakers for gas insulated switchgear can be installed in a short period of time in narrow spaces where electricity demand is increasing rapidly, and the city's facilities are in harmony with the surrounding environment. 〇This breaker for gas insulated switchgear is expected to be widely used in the future.Depending on the switchgear rating, installation space, location, etc., it can be installed horizontally or vertically, but it can be used in conventional gas insulated switchgear. Figure 1 shows the arrangement of the lead terminals in the circuit breaker.

In the case of Fig. 1(a), the two lead terminals A of the breaker,
Since terminals B are provided above and below the same side, the levels of the devices connected to the respective lead terminals A and H are different, and the gas insulated switchgear as a whole has a two-layer arrangement. For this reason, if the level of equipment in the upper floors is high, the seismic performance may deteriorate somewhat.

Furthermore, if the two lead terminals A and B of the breaker are pulled out to both ends in the axial direction of the breaker as shown in Fig. 1(b), the length of the gas-insulated switchgear will increase in the longitudinal direction. Requires a lot of installation space. That is, Fig. 1(a)
The second example shows a concrete example in which a circuit breaker with a lead terminal arrangement as shown in (b) is used in a multi-bus type gas insulated switchgear.
As shown in FIG.

Figure 2 shows an example of the configuration of a double-bus type gas-insulated switchgear using a breaker with the outlet terminal arrangement shown in Figure 1(a), with the lower outlet terminals of the breaker CB arranged perpendicular to the installation surface. Connecting busbar B is placed horizontally to the installation surface.
Disconnector DS51. for the two main busbars via US 12.
．． D852 is connected. Birth mother M BUSJ,
BUS? is fixed on the installation surface, and the main bus disconnect switch DS51. Connected to DS52. On the other hand, the connection bus bar BUS 11, the disconnector DS1, and the earthing device ES are horizontally connected to the upper outlet terminal of the breaker CB, and further connected to the cable connection part CH.

In a gas insulated switchgear with such a configuration, the connection bus bar BUS 7 J, which is not directly related to the performance due to its configuration,
I BUS 7,? This makes the configuration complicated and requires a large amount of installation space. Also,
Since this configuration has a two-layer arrangement, the equipment height dimension H1 is large, and in order to maintain earthquake resistance, it may be necessary to support the equipment on the upper layer with a strong pedestal, and in this case, a large amount of required materials.

Figure 3 shows an example of the configuration of a multi-bus type gas insulated switchgear using a circuit breaker with the lead terminal arrangement shown in Figure 1(b). The output terminal has a horizontally arranged connection bus bar BUS.
12 and main bus disconnect switch DS 5 J, DS 52
Main bus bar BUS J fixed on the installation surface via
BUS2 is connected. Further, a disconnector DS1 and a grounding device gs are connected to the other outlet terminal of the breaker CB in the axial direction of the container of the breaker CB, and a connection tank TK for establishing the bushing B'g is connected. Although such a configuration can reduce the overall height of the equipment, the full voltage,
As the capacity increases, the width W1 becomes larger and the installation area becomes larger.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a gas breaker having three outlet terminals, and thereby having a configuration suitable for a multi-bus type gas insulated switchgear. This is the purpose.

[Summary of the invention]

In order to achieve this object, according to the present invention, the current-carrying conductor drawn out from one end of the cut-off part of the gas breaker is branched into two parts inside the container, and together with the current-carrying conductor drawn out from the other end of the cut-off part, three It is designed to have two output terminals.

An embodiment of the present invention shown in the drawings will be described below.

FIGS. 4(a) and 4(b) show examples of the arrangement of breaker terminals according to the present invention for comparison with the two examples of lead terminal arrangement of the conventional gas insulated breaker shown in FIG. 5 and 6 show a concrete example of these details.

FIG. 5 is a specific example of the case shown in FIG.
A break section 2 is housed along the longitudinal direction (container axial direction) of the container 1, and the break section 2 is opened and closed by an operating device 3 disposed at the longitudinal end of the container 1. This operating device 3 is supported by an operating mechanism case 4 that supports the container 1. The breaking section 2 is composed of two movable electrode sections and a fixed electrode section 2B disposed opposite to the two movable electrode sections. The movable 1llI electrode part 2A is supported by the insulating cylinder 5.
The fixed side electrode portion 2B is fixedly supported via a support insulator 6 on a lid IA that closes the upper end opening of the container 1.

The breaking part 2 is formed as a Pa-F-shaped interruption part, and allows the movable contactor 8, which is connected and driven via the insulating rod 7 by the driving of the operating device 3, to approach and separate from the fixed side electrode part 2B. When shut off, the piston is formed by a cylinder 9 that is driven together with the movable contact 8, and a piston 10 that is disposed within this cylinder 9.

The SFs gas in the fur chamber 11 is compressed and the arc generated between the contacts is extinguished.

On one side of the container 1, there is a spout 12.13 of the interruption part 2.
is provided along the longitudinal direction, and this opening part 12.13
A breaker 20 and an outlet 14 are also provided on the side opposite to the container axis. A current-carrying conductor 15 having one end electrically connected to the fixed electrode part 2B is guided out of the container J from the outlet part 12 while being supported by an insulating spacer groove. From the opening part J3, a current-carrying conductor 17, which is electrically connected at one end to the current-carrying conductor 15 inside the container 1, is arranged parallel to the operating axis of the breaker part 2, and then supported by a recirculating spacer 16 and led out to the outside of the container 1. be done. In addition, the opening part 1
4, a current-carrying conductor 18, one end of which is electrically connected to the movable 981tH portion 2A, is supported by an insulating spacer 16 and led out to the outside of the container 1. Here, it is a matter of course that the current-carrying conductor 17 is arranged with a distance necessary for insulation from the inner surface of the container 1.

In the above embodiment, the vertical ↑d gas breaker was explained, but FIG. 6 shows an embodiment of the horizontal breaker shown in FIG. 4 ib). The same parts as in FIG. 5 are given the same reference numerals. Above the container 1 placed horizontally is the outlet J of the breaker 2.
2, J,? are provided along the longitudinal direction. On the other hand, an opening part 14 of the interruption part 2 is provided in the longitudinal direction of the container 1. A current-carrying conductor 15 having one end electrically connected to the movable electrode portion 2A is supported by an insulating wire 16 and led out from the outlet portion 12 to the outside of the container 1.

A current-carrying conductor 17 whose one end is electrically connected to the current-carrying conductor 15 is disposed parallel to the operating axis of the breaker 2 and is supported by an insulating spacer 16 and guided out of the container 1 from the outlet portion 13 . Further, from the outlet part 14, a current-carrying body 18 whose one end is electrically connected to the fixed electrode part 2B is led out to the outside of the container 1, supported by an insulating spacer 16.

Figures 1 to 7 and Figure 8 are configuration examples of a double-bus type gas insulated switchgear using the gas breaker shown in Figures 5 and 6. The figure shows an example of a horizontal breaker.

FIG. 7 shows disconnectors DS 5 J and DS 52 installed in two openings provided on one side of a vertically installed circuit breaker CB.
The main bus lines BUS1 and BUS2 are respectively integrated with
are connected to each other. A disconnector DS1 and a grounding device ES are connected horizontally to the outlet provided on the other side of the breaker CB, and a disconnector DS1 and a grounding device ES are connected to the cable connection CH.
In this case, the total height l (1tHt <Ht) can be set.

On the other hand, in FIG. 8, the main wall line BUS 1 and BU are integrated with the disconnectors DS 5 J and DS 52, respectively, in the two openings provided above the interrupter, which are placed horizontally.
S2 is connected. A connection tank T, which establishes a bushing BG, is connected to an opening provided in the axial direction of the interrupter CB via a disconnector DS1 arranged horizontally to the installation surface and a grounding device ES. In this case, the overall width W2 can be set to W,<W.O [Effect] As explained above, according to the present invention, the four energized bodies drawn out from one end of the switch of the gas breaker 2 inside the container
By providing three lead-out terminals together with a current-carrying conductor that branches into two and is pulled out from the other end of the breaker, there is no need for a connection bus bar to connect each device of the gas-insulated switchgear, and the height of the gas-insulated switchgear is increased. It is possible to provide a gas breaker suitable for a multi-bus type gas insulated switchgear which has reduced size and width and does not require a large installation area.

[Brief explanation of the drawing]

Figure 1 (at * (b) is an explanatory diagram showing the relationship between the conventionally used breaker position and the conductor lead-out position;
Figure 3 is a schematic diagram showing the configuration of a gas insulated switchgear when using a circuit breaker with a conductor lead-out terminal arrangement as shown in Figure 1 (al l (b)), Figure 4 is a schematic diagram showing the configuration of a gas insulated switchgear as shown in Figures 7 and 3. Fig. 8 is a schematic diagram showing a configuration example of a gas insulated switchgear when used as a breaker according to the present invention. 1... Container, 2... Shutoff part, 3... Operating device,
4... Operating mechanism case, 1... Insulating rod, 12
, 13°14... Opening part. Applicant's representative Patent attorney Takehiko Suzue Figure 1 (a) (b) Figure 2 Go to Figure 3 (a) (b)

Claims (3)

[Claims] (1) An interrupter having a fixed side and a movable side electrode that can be moved toward and away from the vessel in the axial direction of the container is housed in a container filled with insulating gas, and the interrupter is placed outside from one end of the interrupter. The current-carrying conductor to be led out is arranged inside the container in parallel with the interrupting part, and is branched into two parts, a first conductor and a second conductor, which are perpendicular to the container axis and provided in the same direction along the container axis. The current-carrying conductors are respectively led out from the lead terminals of the first and second ends, and the current-carrying conductors are led out from the other end of the above-mentioned interrupted portion. Second
A gas interrupter, characterized in that the outlet terminal is led out from a third outlet terminal provided on a surface of the breaker container different from the surface of the breaker container on which the outlet terminal is provided. (2) The gas breaker according to claim 1, wherein the third outlet terminal is provided at the axial end of the breaker container. (3) The third output terminal is the first. The gas breaker according to claim 1, wherein the gas breaker is provided on the opposite side of the breaker container shaft to the second outlet terminal.